CN106736313B - Go electroplating shaft bushing production technology - Google Patents
Go electroplating shaft bushing production technology Download PDFInfo
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- CN106736313B CN106736313B CN201710141537.3A CN201710141537A CN106736313B CN 106736313 B CN106736313 B CN 106736313B CN 201710141537 A CN201710141537 A CN 201710141537A CN 106736313 B CN106736313 B CN 106736313B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/003—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass bearings
Abstract
The invention discloses one kind to go electroplating shaft bushing production technology, wherein described to go electroplating shaft bushing production technology include the following steps successively carried out: (1) blanking；(2) bent into shape；(3) the flat chamfering of essence;(4) immersion in liquid preventives；(5) retention Hp is rushed；(6) faying face is drawn；(7) deburring polishes；(8) right boring；(9) it is dehydrated antirust.This goes electroplating shaft bushing production technology without plating step, can be avoided to bearing shell repeated contamination, is capable of the oxidation film in effective protection bearing shell steel back face, produces that compactness is high, heat sinking function is strong, work condition environment is good, bearing shell with long service life.
Description
Technical field
The present invention relates to bearing shell technical field of producing, and in particular, to one kind goes electroplating shaft bushing production technology.
Background technique
Bearing shell isSliding bearingWithAxle journalThe part of contact, the demand of bearing shell with Domestic Automotive Industry rapid development
And fast lifting, the main function of bearing shell be carry axle journal applied active force, keep oil-film stabilization, make the stable work of bearing
Make.
Aluminium base bearing shell production technology in the prior art mainly comprises the steps that
(1) material is polished: extra antirust oil on erasing raw material；
(2) blank with machining allowance blanking: is punched out according to the size of bearing shell size；
(3) bent into shape: the blank of semicircle bearing shell is extruded；
(4) the flat chamfering of essence: the width surplus of bearing shell is machined away by beveler, to ensure the width of bearing shell；
(5) it rushes retention Hp: going out the retention Hp of a protrusion in one end of bearing shell, prevent bearing shell from axially transporting in machine
It is dynamic；
(6) it draws faying face: by the semi-perimeter surplus of broaching machine pulling shaft watt, reaching satisfactory bearing shell semi-perimeter size；
(7) deburring: removing the acute angle burr on bearing shell, makes the smooth no acute angle of bearing shell；
(8) pickling is derusted: removing oxidation film and above-mentioned steps (4), (5), (6) middle processing of back of bearing with dilute sulfuric acid
The rust staining in face；
(9) alkali cleaning is deoiled: with the grease stain of sodium bicarbonate and detergent removal bearing shell surface；
(10) other spots such as acid, alkali, salt and the detergent on bearing shell surface cleaning discharge: are rinsed out with clear water；
(11) it is electroplated: by bearing shell as in electroplating pool, plating one layer of tin to bearing shell, keep bearing shell unified appearance white, together
When also play auxiliary antirust effect；
(12) polish: dished out using the polishing machine extra tin gold-plating of short texture, tin layers etc. in being electroplated make its surface light
It is sliding；
(13) boiling: bearing shell is placed in boiling in boiled water and is heated up；
(14) it dries: baking drying being carried out to bearing shell, dries the free water on bearing shell surface;
(15) right boring: bearing shell being placed on boring machine and bores bearing shell required thickness, is matching bearing shell with the inner hole cooperated is needed
When conjunction, the gap width between bearing shell and inner hole hole wall meets the requirements；
(16) antirust oil in sorting: the bearing shell after right boring is sorted, upper common antirust oil, so that bearing shell is in rust-proof life
It is interior to aoxidize；
Bearing shell after above-mentioned steps can be packed and stored.
The shortcomings that above-mentioned this aluminium base bearing shell production technology in the prior art is primarily present is:
1, step (3) is usually to carry out in the mold that Cr12 material quenches, and is easy the steel back face plucking bearing shell, is destroyed
Existing oxidation film, this mold are easily deformed, and reduce the yield and quality of single mold, and then have influenced the patch of bearing shell
It is right that (annotation: compactness refers to the fitting area ratio in bearing shell steel back face Yu bore surface, and fitting area percentage is fewer, bearing shell
Heat dissipation performance it is lower, the operating environment of bearing shell is poorer, and the service life of bearing shell is shorter).
2, since the flat chamfering of (4) essence, (5) rush retention Hp and (6) are drawn in faying face step, machined surface is all easy to get rusty,
So using plating subsequent, pickling is derusted, alkali cleaning is deoiled, cleaning is discharged, be electroplated, polish, boiling, the links such as is dried and is all
In plating link expansion, this serial link, discharge soda acid electroplate liquid destroys environment and consumes noble metal tin, consumption
The body for having taken a large amount of electric energy, having extended processing link, increase production cost, also compromising operator.
3, after drying step, the step of also having carried out right boring and sorted upper antirust oil, within this period, bearing shell
The moisture in air can also be adsorbed, it is easy to by the sweat stain repeated contamination on the finger of operator, so as to shorten the anti-of bearing shell
It becomes rusty the time.
Summary of the invention
The object of the present invention is to provide one kind to go electroplating shaft bushing production technology, this goes electroplating shaft bushing production technology without plating
Step can be avoided to bearing shell repeated contamination, is capable of the oxidation film in effective protection bearing shell steel back face, produces compactness height, is scattered
Heat function is strong, work condition environment is good, bearing shell with long service life.
To achieve the above object, the present invention provides one kind and goes electroplating shaft bushing production technology, wherein described to go electroplating shaft bushing raw
Production. art includes the following steps successively carried out: (1) blanking: obtaining bearing bush billet；(2) bent into shape: bent into shape mould is used
It is semicircular semicircular bearing bush blank that bearing bush billet in step (1) is struck out cross section by tool, wherein the bent into shape mould
The spill working face of tool is provided with oxide film protection material layer, and the convex surface of the semicircular bearing bush blank has oxidation film, the pressure
The spill working face of bending mould and the convex surface of the semicircular bearing bush blank contact with each other and rub during bent into shape；
(3) the flat chamfering of essence: the semicircular bearing bush blank that step (2) obtains is fitted into beveler, semicircle is acted on by inside and outside rose reamer
Exterior angle in the axial ends blank of falling semicircular bearing bush of bearing shell blank, by flat knife cut semicircular bearing bush blank axial ends with
Control the width of semicircular bearing bush blank;(4) immersion in liquid preventives: water-based antirust agent will be placed in by the semicircular bearing bush blank of step (3)
Middle immersion；(5) it rushes retention Hp: being rushed and determined in one end in the circumferential direction of the semicircular bearing bush blank by step (4) using punching machine
Position lip；(6) faying face is drawn: will be by one of the both ends in the circumferential direction of the semicircular bearing bush blank of step (5) by broaching machine
Divide removal, to control the semicircle arc length of semicircular bearing bush blank, obtains bearing shell semi-finished product；(7) deburring polishes: step (6) are obtained
To bearing shell semi-finished product be placed on deburring machine, remove acute angle burr, while by the back side of bearing shell wipe polish；(8) right boring: make
Right boring processing is carried out with inner surface of the boring machine to the bearing shell semi-finished product after step (7), to control the thickness of bearing shell semi-finished product；
(9) it is dehydrated antirust: being impregnated being placed in dewatering rust preventive oil by the bearing shell semi-finished product of step (8), take out the bearing shell after impregnating half
Finished product drains, and obtains bearing shell finished product, wherein the dewatering rust preventive oil includes dehydrating agent and antirust oil；Alternatively, step will be passed through
(8) bearing shell semi-finished product carry out drying and dewatering and antirust oil impregnates.
Preferably, in the step (1), blanking is cut by punching machine.
Preferably, in the step (2), the oxide film protection material layer is that amorphous state tetrahedron carbon film or hard close
Gold.
Preferably, the oxide film protection material layer is amorphous state tetrahedron carbon film, and the amorphous state tetrahedron carbon film is logical
Cathodic vacuum arc plating modulus method is crossed to be formed.
Preferably, in the step (4), the water-based antirust agent includes following parts by weight of component: hydroxybenzotriazole
40-50 parts, 35-42 parts of 1,2- diethoxy estersil base ethane, 5-10 parts of inositol hexaphosphate, 5-8 parts of triethylamine, sodium acetate 1-
4 parts, 0.02-1 parts of oxalic acid.
Preferably, in the step (9), the dewatering rust preventive oil is raw materials used and weight percent is as follows: base oil
75~85%, synthesising sulfonate 0.5~10%, naphthalene sulfonate 0.5~10%, lanolin magnesium soap 0.5~10%, dehydrating agent 10~15%.
Preferably, it is described go electroplating shaft bushing production technology further include the step (6) afterwards repeat step (4) process.
Preferably, it is described go electroplating shaft bushing production technology further include after the step (9) to bearing shell finished product carry out vacuum
The process of skin packaging.
The present invention compared with the existing technology, has the following advantages that place:
(1) in step (2) bent into shape, the working face that is contacted due to the bending and forming mould with the bearing bush billet
It is provided with oxide film protection material layer, convex surface (the commonly referred to as semicircular bearing bush blank of semicircular bearing bush blank can be effectively protected
The back side) oxidation film (for general bearing bush billet when dispatching from the factory from material factory, bearing bush billet steel back face is attached with layer oxide film),
Semicircular bearing bush blank autoxidation film bring antirust function is made full use of, the autoxidation of back of bearing large area has been blocked,
Further, since metallurgical structure of the oxidation film in conjunction with back of bearing is very harmonious, this makes what is provided through the invention to go
The compactness of the bearing shell of electroplating shaft bushing production technology production is very high, and then improves the heat sinking function of bearing shell, extends bearing shell
Service life.
(2) it by improving bearing shell antirust ability in step (2) to bearing shell oxide film protection, and is soaked by step (4)
Antirust is steeped to block machined surface to aoxidize, therefore subsequent without carrying out plating step, eliminate a series of works around plating in this way
Skill link, to prevent the discharge of the harmful substances such as soda acid heavy metal, chlorine, protect environment and the body and mind of operator strong
Health, and remove plating and also a save the energy, the consumption that avoids the precious metals such as copper and tin, simplify process flow (by former
16 procedures reduction 9 procedures till now), reduce production cost, improve economic benefit.
(3) by be dehydrated antirust step be arranged in technique finally, such can prevent bearing shell by the finger of operator
Sweat stain repeated contamination, so that antirust is more lasting.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the process flow chart for going electroplating shaft bushing production technology of embodiments of the present invention.
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Referring to Fig. 1, the present invention provides one kind and goes electroplating shaft bushing production technology, wherein goes the electroplating shaft bushing production technology to include
The following steps successively carried out:
(1) blanking: obtaining bearing bush billet, specifically, is joined according to outer diameter, width, thickness of required bearing shell finished product etc.
Then number, machining allowance needed for calculating bearing shell finished product calculate the ginseng such as the length and width for meeting the raw material of the machining allowance, thickness
Then number cuts out the raw material (bearing bush billet) that a batch has identical size by punching machine；
(2) bearing bush billet in step (1) bent into shape: is struck out into cross section as semicircle using bending and forming mould
Semicircular bearing bush blank, wherein the spill working face of bending and forming mould is provided with oxide film protection material layer, half circular shaft
The convex surface of watt blank has an oxidation film, and the convex surface of the spill working face of the bending and forming mould and the semicircular bearing bush blank exists
It contacts with each other and rubs during bent into shape；The working face that bending and forming mould mentioned herein is contacted with bearing bush billet can be with
The concave work surface of finger pressure bending mould, after the starting of bent into shape punching machine, control bending and forming mould rushes plate bearing bush billet
It is pressed onto the concave work surface of bending and forming mould, so that plate bearing bush billet be made to bent, becoming cross section is semicircular semicircle
Bearing shell blank, oxide film protection material layer is amorphous state tetrahedron carbon film or hard alloy, when oxide film protection material layer is non-
When crystalline state tetrahedron carbon film, specific the step of making molding die may is that be quenched with after Cr12 material roughing, is passed through
Wire cutting technology is cut into the inner hole (concave work surface that the inner hole is above-mentioned bending and forming mould) having a margin, then by interior
Circle grinding machine grinds inner hole to required size, may then pass through cathodic vacuum arc coating method the surface of inner hole plate one layer it is super
Firmly, the amorphous state tetrahedron carbon film bright and clean, wearability is high, design parameter are as follows: hardness HV3000-5000, mould are 1.5 μm thick, rub
Coefficient is 0.1,80 DEG C of process temperatures, 300 degrees Celsius of resistance to oxidation temperature；(3) the flat chamfering of essence: half circular shaft that step (2) is obtained
Watt blank is fitted into beveler, is acted in the axial ends blank of falling semicircular bearing bush of semicircular bearing bush blank by inside and outside rose reamer
Exterior angle by the axial ends of flat knife cutting semicircular bearing bush blank to control the width of semicircular bearing bush blank, that is, processes
Exterior angle in required bearing shell width and required bearing shell out;
(4) immersion in liquid preventives: will be placed in water-based antirust agent and impregnate by the semicircular bearing bush blank of step (3), this can be
Block semicircular bearing bush blank that oxidation reaction occurs during next procedure within the scope of certain time, water-based antirust agent includes as follows
Parts by weight of component: 40-50 parts of hydroxybenzotriazole, 35-42 parts of 1,2- diethoxy estersil base ethane, inositol hexaphosphate 5-10
The characteristics of part, 5-8 parts of triethylamine, 1-4 parts of sodium acetate, 0.02-1 parts of oxalic acid, this water-based antirust agent, is played to non-ferrous metal
The effect of antirust, and do not corrode mock silver layer, can be blent with clear water various concentration water-based antirust agent meet it is anti-
The length and intensity requirement of rust time；
(5) it rushes retention Hp: being rushed and determined in one end in the circumferential direction of the semicircular bearing bush blank by step (4) using punching machine
Position lip, can prevent bearing shell to be axially moved in the machine in this way；
(6) faying face is drawn: will be by the one of the both ends in the circumferential direction of the semicircular bearing bush blank of step (5) by broaching machine
Part removes, and that is to say the machining allowance at the both ends in the circumferential direction of removal semicircular bearing bush blank, to control semicircular bearing bush hair
The semicircle arc length of base, makes it meet semicircle arc length required for bearing shell, obtains bearing shell semi-finished product；
(7) deburring polishes: the bearing shell semi-finished product that step (6) obtains being placed on deburring machine, remove acute angle burr, together
When the back side of bearing shell wiped into polishing, make the smooth oxidation film of bearing shell, cleaning, pitch-black shinny；
(8) right boring: right boring processing is carried out using inner surface of the boring machine to the bearing shell semi-finished product after step (7), with control
The thickness of bearing shell semi-finished product processed that is to say the thickness machining allowance for falling bearing shell with boring machine boring, keep the inner hole of the bearing shell processed straight
Diameter meets high-precision requirement；
(9) it is dehydrated antirust: being impregnated being placed in dewatering rust preventive oil by the bearing shell semi-finished product of step (8), taken out after impregnating
Bearing shell semi-finished product drain, obtain bearing shell finished product, wherein dewatering rust preventive oil includes dehydrating agent and antirust oil, and dehydrating agent is for taking off
Except the free water on bearing shell surface, specifically, dewatering rust preventive oil is raw materials used and weight percent is as follows: base oil 75~85% closes
At sulfonate 0.5~10%, naphthalene sulfonate 0.5~10%, lanolin magnesium soap 0.5~10%, dehydrating agent 10~15%, certainly, this hair
It is bright to be not limited to be dehydrated using dewatering rust preventive oil, as a kind of alternative embodiment, step can will be passed through
(8) bearing shell semi-finished product carry out drying and dewatering and bearing shell semi-finished product are placed in antirust oil to impregnate.
As described above, being contacted due to the bending and forming mould with the bearing bush billet in step (2) bent into shape
Working face is provided with oxide film protection material layer, can be effectively protected convex surface (commonly referred to as half circular shaft of semicircular bearing bush blank
The back side of watt blank) oxidation film (in general, bearing bush billet, when dispatching from the factory from material factory, the bearing bush billet back side is attached with one layer of oxygen
Change film), semicircular bearing bush blank autoxidation film bring antirust function is made full use of, the natural oxygen in bearing shell steel back face has been blocked
Change, further, since metallurgical structure of the oxidation film in conjunction with back of bearing is very harmonious, what this to provide through the invention
The compactness for the bearing shell for going electroplating shaft bushing production technology to produce is very high, and then improves the heat sinking function of bearing shell, extends axis
Watt service life.By improving bearing shell antirust ability in step (2) to bearing shell oxide film protection, and pass through step (4)
Immersion in liquid preventives blocks machined surface to aoxidize, therefore subsequent without carrying out plating step, is eliminated in this way around a series of of plating
Process procedure, to prevent the discharge of the harmful substances such as soda acid heavy metal, chlorine, protect environment and the body and mind of operator
Health, and remove plating and also a save the energy, the consumption that avoids the precious metals such as copper and tin, simplify process flow, reduce
Production cost improves economic benefit.In addition, by be dehydrated antirust step be arranged in technique finally, such can prevent axis
Watt by the sweat stain repeated contamination on the finger of operator, so that antirust is more lasting.
According to the preferred embodiment of the present invention, it goes electroplating shaft bushing production technology that can also be included in step (6) to repeat afterwards
The process of step (4), that is to say, that the process that immersion in liquid preventives can be repeated after drawing faying face, if need to repeat to impregnate anti-
The process of rust can be determined according to practical condition and weather condition.Such as manufacturing schedule it is slow when or weather it is warm and humid when, fit
The process that immersion in liquid preventives is repeated after drawing faying face is closed, this is because the water-based antirust agent is a kind of oil-free short-acting antirust
Agent only needs it to have antirust effect in shorter process.
It is, of course, understood that after going electroplating shaft bushing production technology that can also be included in step (9) to bearing shell finished product into
The process of row vacuum skin packaging.Due to being not related to core of the invention inventive point about the packaging of bearing shell finished product, here not
It is described in detail again.
Obviously, above embodiment is only intended to clearly illustrate example, and does not limit the embodiments.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this
Or it changes still within the protection scope of the invention.
Claims (5)
1. one kind goes electroplating shaft bushing production technology, which is characterized in that described to go electroplating shaft bushing production technology include successively carrying out
Following steps:
(1) blanking: bearing bush billet is obtained；
(2) bent into shape: it is semicircular half that the bearing bush billet in step (1), which is struck out cross section, using bending and forming mould
Circular shaft watt blank, wherein the spill working face of the bending and forming mould is provided with oxide film protection material layer, half circular shaft
The convex surface of watt blank has an oxidation film, and the convex surface of the spill working face of the bending and forming mould and the semicircular bearing bush blank exists
It contacts with each other and rubs during bent into shape；
(3) the flat chamfering of essence: the semicircular bearing bush blank that step (2) obtains is fitted into beveler, is acted on by inside and outside rose reamer
Exterior angle in the axial ends blank of falling semicircular bearing bush of semicircular bearing bush blank cuts axial the two of semicircular bearing bush blank by flat knife
It holds to control the width of semicircular bearing bush blank；
(4) immersion in liquid preventives: immersion in liquid preventives in water-based antirust agent will be placed in by the semicircular bearing bush blank of step (3)；
(5) retention Hp is rushed: using punching machine in the punching positioning of one end in the circumferential direction of the semicircular bearing bush blank by step (4)
Lip；
(6) faying face is drawn: will be by a part at the both ends in the circumferential direction of the semicircular bearing bush blank of step (5) by broaching machine
Removal, to control the semicircle arc length of semicircular bearing bush blank, obtains bearing shell semi-finished product；
(7) deburring polishes: the bearing shell semi-finished product that step (6) obtains being placed on deburring machine, acute angle burr is removed, simultaneously will
The back side of bearing shell wipes polishing；
(8) right boring: right boring processing is carried out using inner surface of the boring machine to the bearing shell semi-finished product after step (7), with control shaft
The thickness of watt semi-finished product；
(9) it is dehydrated antirust: being impregnated being placed in dewatering rust preventive oil by the bearing shell semi-finished product of step (8), take out the axis after impregnating
Watt semi-finished product drain, and obtain bearing shell finished product, wherein the dewatering rust preventive oil includes dehydrating agent and antirust oil；Alternatively, will be by step
Suddenly the bearing shell semi-finished product of (8) carry out drying and dewatering and antirust oil impregnates；
In the step (2), the oxide film protection material layer is amorphous state tetrahedron carbon film or hard alloy；
In the step (4), the water-based antirust agent includes following parts by weight of component: 40-50 parts of hydroxybenzotriazole, 1,2-
35-42 parts of diethoxy estersil base ethane, 5-10 parts of inositol hexaphosphate, 5-8 parts of triethylamine, 1-4 parts of sodium acetate, oxalic acid
0.02-1 parts；
In the step (9), the dewatering rust preventive oil is raw materials used and weight percent is as follows: base oil 75~85% closes
At sulfonate 0.5~10%, naphthalene sulfonate 0.5~10%, lanolin magnesium soap 0.5~10%, dehydrating agent 10~15%.
2. according to claim 1 go electroplating shaft bushing production technology, which is characterized in that in the step (1), pass through punching
Bed cuts blanking.
3. according to claim 2 go electroplating shaft bushing production technology, which is characterized in that the oxide film protection material layer is
Amorphous state tetrahedron carbon film, the amorphous state tetrahedron carbon film plate modulus method by cathodic vacuum arc and are formed.
4. according to claim 1 go electroplating shaft bushing production technology, which is characterized in that described to go electroplating shaft bushing production technology
It further include the process for repeating step (4) afterwards in the step (6).
5. as claimed in any of claims 1 to 4 go electroplating shaft bushing production technology, which is characterized in that described to remove electricity
Plating bearing shell production technology further includes the process for carrying out vacuum skin packaging to bearing shell finished product after the step (9).
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| CN201710141537.3A CN106736313B (en) | 2017-03-10 | 2017-03-10 | Go electroplating shaft bushing production technology |
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| CN201710141537.3A CN106736313B (en) | 2017-03-10 | 2017-03-10 | Go electroplating shaft bushing production technology |
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| CN107794385B (en) * | 2017-10-13 | 2019-09-10 | 烟台大丰轴瓦有限责任公司 | A kind of preparation method of large ship engine spindle watt |
| CN107725600A (en) * | 2017-10-13 | 2018-02-23 | 烟台大丰轴瓦有限责任公司 | The production technology of tin aluminium silicon bearing shell fatigue resistance in a kind of lifting |
| CN109128697A (en) * | 2018-08-10 | 2019-01-04 | 贵州新航力装备制造有限公司 | A kind of production technology of crankshaft |
| CN112192155B (en) * | 2018-12-15 | 2021-07-06 | 烟台大丰轴瓦有限责任公司 | Machining method of high-precision shaft bush machining part |
| CN111715729B (en) * | 2018-12-15 | 2021-12-28 | 烟台大丰轴瓦有限责任公司 | Assembly of bearing bush machining system based on automatic control and assembling method |
| CN114427107A (en) * | 2020-10-29 | 2022-05-03 | 东莞市铧美电子有限公司 | Antirust treatment process for alloy electroplated product |
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